Fitch expects to rate the transaction and assign Rating Outlooks as
follows:

--$56,812,000 class A-1 'AAAsf'; Outlook Stable;

--$116,213,000 class A-2 'AAAsf'; Outlook Stable;

--$216,747,000 class A-3 'AAAsf'; Outlook Stable;

--$301,979,000 class A-4 'AAAsf'; Outlook Stable;

--$87,793,000 class A-AB 'AAAsf'; Outlook Stable;

--$847,754,000a class X-A 'AAAsf'; Outlook Stable;

--$68,210,000 class A-S 'AAAsf'; Outlook Stable;

--$76,563,000 class B 'AA-sf'; Outlook Stable;

--$189,318,000c class PEZ 'A-sf'; Outlook Stable;

--$44,545,000 class C 'A-sf'; Outlook Stable;

--$22,273,000a,b class X-B 'BBsf'; Outlook Stable;

--$55,682,000b class D 'BBB-sf'; Outlook Stable;

--$22,273,000b class E 'BBsf'; Outlook Stable;

--$12,528,000b class F 'Bsf'; Outlook Stable.

a Notional amount and interest-only.

b Privately placed pursuant to Rule 144A.

c Class A-S, B, and C certificates may be exchanged for class PEZ
certificates, and class PEZ certificates may be exchanged for up to the
full certificate principal amount of the class A-S, B and C certificates.

The expected ratings are based on information provided by the issuer as
of Jan. 15, 2014. Fitch does not expect to rate the $54,290,128 class G
or the $66,818,128 interest-only class X-C.

The certificates represent the beneficial ownership in the trust,
primary assets of which are 74 loans secured by 141 commercial
properties having an aggregate principal balance of approximately $1.113
billion as of the cutoff date. The loans were contributed to the trust
by Goldman Sachs Mortgage Company, Citigroup Global Markets Realty
Corp., Starwood Mortgage Funding I LLC, and Cantor Commercial Real
Estate Lending, L.P.

Fitch reviewed a comprehensive sample of the transaction's collateral,
including site inspections on 72.2% of the properties by balance and
cash flow analysis and asset summary reviews on 81.2% of the pool.

KEY RATING DRIVERS

High Fitch Leverage: The pool's Fitch DSCR and LTV of 1.15x and 106.2%,
respectively, are worse than the 2013 and 2012 averages of 1.29x and
101.6% and 1.24x and 97.2%, respectively.

Limited Lodging Exposure: The pool's hotel concentration of 8.1% is
lower than the 2013 average hotel concentration of 14.7%. Two of the 15
largest loans in the pool are collateralized by hotel properties. Hotels
have a higher probability of default in Fitch's multiborrower model.

Malls Located in Secondary Markets and High Retail Concentration: Two of
the five largest loans, The Crossroads (9% of the pool) and Wyoming
Valley Mall (7%), are collateralized by regional malls located in
secondary markets. Retail properties represent the largest property type
concentration at 40.5% of the pool, including five of the top 10 loans.
This is higher than the 2013 average retail concentration of 33.2%.

Secondary Markets: Six of the 10 largest loans are collateralized by
properties located in secondary markets, including Portage, MI,
Wilkes-Barre, PA, Toledo, OH, Anchorage, AK, and Bangor, ME. The largest
state concentrations are Pennsylvania (16.7%), Michigan (12.9%), and
Louisiana (11.7%).

RATING SENSITIVITIES

For this transaction, Fitch's NCF was 9.9% below the full-year 2012 NOI
(for properties that 2012 NOI was provided, excluding properties that
were stabilizing during this period).

Unanticipated further declines in property-level NCF could result in
higher defaults and loss severity on defaulted loans, and could result
in potential rating actions on the certificates. Fitch evaluated the
sensitivity of the ratings assigned to GSMS 2014-GC18 certificates and
found that the transaction displays average sensitivity to further
declines in NCF. In a scenario in which NCF declined a further 20% from
Fitch's NCF, a downgrade of the junior 'AAAsf' certificates to 'A-sf'
could result. In a more severe scenario, in which NCF declined a further
30% from Fitch's NCF, a downgrade of the junior 'AAAsf' certificates to
'BBB-sf' could result.

The presale report includes a detailed explanation of additional
stresses and sensitivities in the Rating Sensitivity and Rating Stresses
sections of the presale.

The master servicer will be Wells Fargo Bank, N.A., rated 'CMS1-' by
Fitch. The special servicer will be LNR Partners LLC, rated 'CSS1-' by
Fitch.

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